Reverse list in-place Dry Run in PYTHON

Reverse list in-place is an interactive PYTHON dry run visualizer from the Recursion programs section. Study the source code, then use the execution controls to follow each step, variable update, highlighted line, and console output.

This page provides a browser-based dry run with source-code highlighting, auto-scroll, voice narration controls, and execution output for learning the program step by step.

Reverse list in-place Program Code

def reverse_list(arr, left, right):
    if left >= right:
        return
    arr[left], arr[right] = arr[right], arr[left]
    reverse_list(arr, left+1, right-1)

arr = [10, 20, 30, 40, 50, 60]
print(f"Original: {arr}")
reverse_list(arr, 0, len(arr)-1)
print(f"Reversed: {arr}")

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